Jöckel, Dennis Michael ; Yoon, Songhak ; Frebel, Alexander ; Neguse, Samuel Meles ; Rossa, Jürgen Dieter ; Bett, Alexander Jürgen ; Schubert, Martin ; Widenmeyer, Marc ; Balke-Grünewald, Benjamin ; Weidenkaff, Anke (2024)
Solar Degradation and Stability of Lead‐Free Light Absorber Cs₂AgBiBr₆ in Ambient Conditions.
In: Advanced Photonics Research, 2024, 5 (5)
doi: 10.26083/tuprints-00027691
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
As numerous studies on highly efficient perovskite solar cells have been conducted on lead‐based light absorbers, such as MAPbI₃ and FAPbI₃, increasing concerns are rising regarding toxicity and stability issues. One of the most prominent and promising lead‐free alternatives is the double‐perovskite Cs₂AgBiBr₆, which is well‐suited for multi‐junction solar cells considering its relatively large indirect bandgap of around 1.95–2.05 eV. Despite distinctive reports on its performance under ambient conditions, the demonstrated stability has not yet been conclusively clarified. Within this study, the degradation behavior of Cs₂AgBiBr₆ single crystals is investigated under different ambient environments, such as AM1.5g solar irradiation, aquatic conditions, and humidity. The corresponding samples are analyzed by using Raman, UV–vis, energy‐dispersive X‐Ray, and micro‐photoluminescence spectroscopies together with X‐Ray diffraction. High intrinsic stability of Cs₂AgBiBr₆ in ambient conditions and severe degradation in aquatic conditions are observed. Furthermore, surface morphology alterations are found during the simulated solar irradiation indicating photo‐accelerated degradation behavior. In the results of this study, it is clearly implied that intense research efforts need to be put into sealing the Cs₂AgBiBr₆ layer in solar cells with the goal of protecting it from humidity and water intrusion simultaneously, therefore avoiding photo‐accelerated degradation.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Jöckel, Dennis Michael ; Yoon, Songhak ; Frebel, Alexander ; Neguse, Samuel Meles ; Rossa, Jürgen Dieter ; Bett, Alexander Jürgen ; Schubert, Martin ; Widenmeyer, Marc ; Balke-Grünewald, Benjamin ; Weidenkaff, Anke |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Solar Degradation and Stability of Lead‐Free Light Absorber Cs₂AgBiBr₆ in Ambient Conditions |
| Sprache: | Englisch |
| Publikationsjahr: | 16 September 2024 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | Mai 2024 |
| Ort der Erstveröffentlichung: | Weinheim |
| Verlag: | Wiley-VCH |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Advanced Photonics Research |
| Jahrgang/Volume einer Zeitschrift: | 5 |
| (Heft-)Nummer: | 5 |
| Kollation: | 10 Seiten |
| DOI: | 10.26083/tuprints-00027691 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/27691 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | As numerous studies on highly efficient perovskite solar cells have been conducted on lead‐based light absorbers, such as MAPbI₃ and FAPbI₃, increasing concerns are rising regarding toxicity and stability issues. One of the most prominent and promising lead‐free alternatives is the double‐perovskite Cs₂AgBiBr₆, which is well‐suited for multi‐junction solar cells considering its relatively large indirect bandgap of around 1.95–2.05 eV. Despite distinctive reports on its performance under ambient conditions, the demonstrated stability has not yet been conclusively clarified. Within this study, the degradation behavior of Cs₂AgBiBr₆ single crystals is investigated under different ambient environments, such as AM1.5g solar irradiation, aquatic conditions, and humidity. The corresponding samples are analyzed by using Raman, UV–vis, energy‐dispersive X‐Ray, and micro‐photoluminescence spectroscopies together with X‐Ray diffraction. High intrinsic stability of Cs₂AgBiBr₆ in ambient conditions and severe degradation in aquatic conditions are observed. Furthermore, surface morphology alterations are found during the simulated solar irradiation indicating photo‐accelerated degradation behavior. In the results of this study, it is clearly implied that intense research efforts need to be put into sealing the Cs₂AgBiBr₆ layer in solar cells with the goal of protecting it from humidity and water intrusion simultaneously, therefore avoiding photo‐accelerated degradation. |
| Freie Schlagworte: | Cs₂AgBiBr₆, lead‐free photovoltaics, perovskite solar cells, stability studies |
| ID-Nummer: | Artikel-ID: 2300269 |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-276916 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Werkstofftechnik und Ressourcenmanagement |
| Hinterlegungsdatum: | 16 Sep 2024 11:38 |
| Letzte Änderung: | 17 Sep 2024 06:20 |
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| Suche nach Titel in: | TUfind oder in Google |
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- Solar Degradation and Stability of Lead‐Free Light Absorber Cs₂AgBiBr₆ in Ambient Conditions. (deposited 16 Sep 2024 11:38) [Gegenwärtig angezeigt]
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